mms icon change

Developer

So I want to change the icon of my mms app and I cannot file the icon file. I went through all png files thinkign it would be there and I didn't see it. Does anyone know where the file is located and the name of the file so I can change the icon for the mms.apk And I do not want to use better cut I want my icon change in the apk itself so it will show up in app drawer also.

Thanks so much I spent forever looking and I thought I clicked on everyone lol I guess I didn't.
Also by any chance the ongoing in the notification pulldown. Not the words ongoing (thats done with the services.jar) but the background to it I can't seem to find that png file either. I checked every signle status background and status_...... png files and basically went throuhg the entire framewrok res/hdpi folder and could not find it also went through a few other folders looking but can't seem to find it can anyone help with that?